CN209182565U - A kind of economical LONG WAVE INFRARED optics is without thermalization camera lens - Google Patents
A kind of economical LONG WAVE INFRARED optics is without thermalization camera lens Download PDFInfo
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- CN209182565U CN209182565U CN201821510276.4U CN201821510276U CN209182565U CN 209182565 U CN209182565 U CN 209182565U CN 201821510276 U CN201821510276 U CN 201821510276U CN 209182565 U CN209182565 U CN 209182565U
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- thermalization
- object space
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- 239000000571 coke Substances 0.000 claims abstract description 9
- 239000005387 chalcogenide glass Substances 0.000 claims abstract description 4
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 4
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005083 Zinc sulfide Substances 0.000 claims abstract description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000003287 optical effect Effects 0.000 claims description 17
- 230000006978 adaptation Effects 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 3
- 230000004075 alteration Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000012149 noodles Nutrition 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Abstract
The utility model discloses a kind of economical LONG WAVE INFRARED optics without thermalization camera lens, successively has three lens cluster from object space to image space, comprising: the first lens with positive light coke are falcate chalcogenide glass positive lens of a piece of convex surface towards object space；The second lens with negative power are plano-concave shape zinc sulphide negative lens of the plate plane in object space side；The third lens with positive light coke are falcate germanium positive lens of a piece of convex surface towards object space.The utility model can be imaged within the scope of -40 DEG C~60 DEG C without thermalization, while F number is 1.0, focal length 50mm, is suitable for 640x480,17 μm of Pixel size of long wave uncooled detector；The imaging clearly in -40 DEG C~60 DEG C temperature ranges, realizes optics without thermalization, small in size compared to same type camera lens, light-weight, more economical practical.
Description
Technical field
The utility model belongs to optical technical field, is related to a kind of economical length for LWIR Uncooled detector
Wave infrared optics is without thermalization camera lens.
Background technique
With reaching its maturity for infrared technique, infrared optical lens are increasingly drawn close to visible light lens field, commonly
It is not able to satisfy the demand of more environment temperatures, is needed using no thermalization camera lens.No thermalization camera lens can adapt to -40 DEG C~60 DEG C
Imaging clearly in temperature range will not be influenced by variation of ambient temperature.Optics without thermalization camera lens relative to active without thermalization and
Machinery has its unique advantages without thermalization technology.Therefore there is an urgent need to a kind of small in size, light-weight optics is without thermalization camera lens.
This camera lens can guarantee that image quality is good in operating temperature range, while aperture is kept constant, and be mounted on hand-held or mobile
It is easy to carry on formula thermal imaging system.Same type camera lens the utility model is practical relatively reduces eyeglass bore, and cost is cheaper.
Utility model content
The utility model provides a kind of economical LONG WAVE INFRARED optics without thermalization camera lens, and technical problems to be solved are to mention
For a kind of optical design athermal, the total length of optics is small in size, easy to carry, and adjustment is convenient, and the high optics of image quality is without warm
Change camera lens.Its service band is 8~12 microns, number=1.0 focal length 50mm, F, and adaptation resolution ratio is 640x480, Pixel size
17 microns of uncooled detector, optical system overall length 60.881mm, maximum caliber 50mm.
To achieve the goals above, the technical solution adopted in the utility model are as follows:
A kind of economical LONG WAVE INFRARED optics successively includes, the first lens, aperture light by object space to image space without thermalization camera lens
Door screen, the second lens, the third lens and explorer portion；
First lens have positive light coke, are falcate chalcogenide glass positive lens of a piece of convex surface towards object space, table
Noodles type is aspherical；
The aperture diaphragm is located at after the first lens；
Second lens have negative power, are plano-concave shape zinc sulphide negative lens of the plate plane in object space side,
It is aspherical towards the side of image space；
The third lens have positive light coke, are falcate germanium single crystal positive lens of a piece of convex surface towards object space, table
Noodles type is aspherical；
It is long wave uncooled detector part, including protecting window and image planes after the focusing group.
The camera lens meets following parameter:
Number=1.0 effective focal length EFL=50mm, F of the camera lens, optical system overall length=60.881mm, adaptation detection
Device resolution ratio 640x480,17 μm of Pixel size.
The horizontal field of view angular region of the camera lens are as follows: 2w=12.4 °.
Aspherical in the eyeglass of the camera lens meets following expression formula:
Wherein z be it is aspherical along optical axis direction when being highly the position of r, away from aspheric vertex of surface apart from rise, c is indicated
The vertex curvature on surface, k are circular cone coefficient, α2、α3、α4、α5、α6For high order aspheric surface coefficient.
The utility model has the following beneficial effects: optical system is total without heat differential in -40 DEG C~60 degrees Celsius a wide range of temperature
A length of 60.881mm, maximum caliber 50mm, it is compact-sized.System has only used three pieces eyeglass, keeps system more stable.It uses simultaneously
Refractive optical structure, adjustment is easy, is easy to volume production.Image quality is excellent in entire temperature range, and the average MTF of full filed >
0.67@20lp/mm。
Detailed description of the invention
Fig. 1 is optical system of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at 20 DEG C of room temperature
Figure；
Fig. 2 is point range figure of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at 20 DEG C of room temperature；
Fig. 3 is optical delivery of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at 20 DEG C of room temperature
Functional arrangement (cut-off resolution ratio is 30lp/mm)；
Fig. 4 is that the curvature of field of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at 20 DEG C of room temperature distorts
Figure；
Fig. 5 is optical system of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at -40 DEG C of low temperature
System figure；
Fig. 6 is point range figure of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at -40 DEG C of low temperature；
Fig. 7 is that optics of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at -40 DEG C of low temperature passes
Delivery function figure (cut-off resolution ratio is 30lp/mm)；
Fig. 8 is that economical LONG WAVE INFRARED optics provided by the utility model is abnormal in -40 DEG C of low temperature of the curvature of field without thermalization camera lens
Become figure；
Fig. 9 is optical system of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at 60 DEG C of high temperature
Figure；
Figure 10 is point range figure of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at 60 DEG C of high temperature；
Figure 11 is that optics of the economical LONG WAVE INFRARED optics provided by the utility model without thermalization camera lens at 60 DEG C of high temperature passes
Delivery function figure (cut-off resolution ratio is 30lp/mm)；
Figure 12 is that economical LONG WAVE INFRARED optics provided by the utility model is abnormal in 60 DEG C of high temperature of the curvature of field without thermalization camera lens
Become figure；
Wherein, 100- object space, the first lens of L1-, the second lens of L2-, L3- the third lens, 101- detector protect window
Mouthful, 102- image planes, S1~S7 is each surface of lens and diaphragm face.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further details by embodiment.
The embodiment is that the utility model is stared applied to 17 μm of 640 × 480 pixel dimension of long wave non-refrigeration type resolution ratio
The example of formed coke planar detector.
Fig. 1, Fig. 5, Fig. 9 are respectively the utility model at 20 DEG C of room temperature, -40 DEG C of low temperature, the optical system diagram that 60 DEG C of high temperature,
The economical structure of the LONG WAVE INFRARED optics without thermalization camera lens is identical, as explanation by taking one of figure as an example.
As shown in Figure 1, the utility model apply by the first lens L1 of positive light coke, negative power the second lens L2,
The third lens L3 of positive light coke and last detector 101,102 composition.
L1 i.e. the first lens are positive lens of the convex surface towards object space, and material is chalcogenide glass, two surface S1, S2 are equal
It is aspherical；Diaphragm face is S3；It is negative lens that L2 i.e. the second lens, which are plano-concave shape of the plane in object space side, and material is vulcanization
Zinc, two sides are respectively S4 and S5, and the surface S5 is aspherical；L3, that is, the third lens, is positive lens of the convex surface towards object space, and material is
Germanium single crystal, two surface S6, S7 are aspherical；Long wave uncooled detector includes: protecting window 101, imaging surface 102,
Resolution ratio is 640x480,17 μm x17 μm of Pixel size.
In the above three pieces lens, plating anti-reflection film is to guarantee its transmitance.
Table 1 is Optic structure parameter of the utility model at 20 DEG C of temperature:
Table 1
| Surface | Radius of curvature | Thickness (interval) | Material | Bore |
| S1 | 39.956 | 7.3 | IRG204 | 50 |
| S2 | 60.670 | 4 | 45.6 | |
| S3 | Infinity | 5.364 | 45.4 | |
| S4 | Infinity | 2.6 | ZNS_IR | 44 |
| S5 | 327.374 | 25.747 | 40.6 | |
| S6 | 26.345 | 3 | GE_LONG | 26 |
| S7 | 26.307 | 10.5 | 24.6 |
It refers to aspherical in the above three pieces lens, is even aspheric surface, expression formula is as follows
Wherein z be it is aspherical along optical axis direction when being highly the position of r, away from aspheric vertex of surface apart from rise, c is indicated
The vertex curvature on surface, k are circular cone coefficient, α2、α3、α4、α5、α6For high order aspheric surface coefficient.
Surface S1, S2, S5 when table 2 is 20 DEG C of room temperature, the asphericity coefficient of S6, S7:
Table 2
| Surface | 4th | 6th | 8th | 10th |
| S1 | -9.192E-7 | 7.338E-10 | -2.293E-12 | -2.166E-15 |
| S2 | -1.574E-6 | 2.989E-9 | -1.020E-11 | 5.652E-15 |
| S5 | 6.845E-7 | -1.853E-9 | 2.482E-12 | -6.013E-15 |
| S6 | -1.333E-5 | -2.347E-7 | -8.473E-11 | -3.694-12 |
| S7 | -1.635E-5 | -3.071E-7 | -1.136E-9 | 5.004E-12 |
Further detailed description is done referring to effect of the Aberration Analysis figure to the utility model.
Fig. 2-Fig. 4 is economical specific embodiment of the LONG WAVE INFRARED optics without thermalization camera lens described in Fig. 1 at 20 DEG C of room temperature
Aberration Analysis figure when state, it be MTF figure, Fig. 4 is curvature of field distortion figure that Fig. 2, which is point range figure, Fig. 3,.
Fig. 6-Fig. 8 is economical specific embodiment of the LONG WAVE INFRARED optics without thermalization camera lens described in Fig. 5 at-40 DEG C of low temperature
Aberration Analysis figure when state, it be MTF figure, Fig. 8 is curvature of field distortion figure that Fig. 6, which is point range figure, Fig. 7,.
Figure 10-Figure 12 is economical specific embodiment of the LONG WAVE INFRARED optics without thermalization camera lens described in Fig. 9 in high temperature 60
Aberration Analysis figure when DEG C state, it be MTF figure, Figure 12 is curvature of field distortion figure that Figure 10, which is point range figure, Figure 11,.
From, it can be found that the various aberrations at each temperature have obtained good correction, disc of confusion is corrected to and connects in figure
Nearly Aili spot size, MTF is close to diffraction limit, distortion < 5%.
Number=1.0 effective focal length EFL=50mm, F of the camera lens, optical system overall length=60.881mm, adaptation detection
Device resolution ratio 640x480,17 μm x17 μm of Pixel size.The horizontal field of view angular region of the camera lens are as follows: 2w=12.4 °.
It can be seen that economical LONG WAVE INFRARED optics described in the utility model has in temperature range without thermalization camera lens
Good image quality.
Finally, it should be noted that above embodiments are only to illustrate the utility model and not limit the utility model and retouched
The technical solution stated.Therefore, although this specification has been carried out detailed description to the utility model referring to the above embodiments,
But those skilled in the art should understand that, it still can modify to the utility model or equivalent replacement；And one
The technical solution and its improvement for cutting the spirit and scope for not departing from the utility model, should all cover the right in the utility model
In claimed range.
Claims (3)
1. a kind of economical LONG WAVE INFRARED optics is without thermalization camera lens, it is characterised in that: successively include that first thoroughly by object space to image space
Mirror, aperture diaphragm, the second lens, the third lens and explorer portion；
First lens have positive light coke, are falcate chalcogenide glass positive lens of a piece of convex surface towards object space, surface class
Type is aspherical；
The aperture diaphragm is located at after the first lens；
Second lens have negative power, are plano-concave shape zinc sulphide negative lens of the plate plane in object space, towards image space
Side be it is aspherical；
The third lens have positive light coke, are falcate germanium single crystal positive lens of a piece of convex surface towards object space, surface type
It is aspherical；
It is long wave uncooled detector part, including protecting window and image planes after the third lens；
The horizontal field of view angular region of camera lens are as follows: 2w=12.4 °, the@of average MTF > 0.67 20lp/mm of the full filed of camera lens.
2. economical LONG WAVE INFRARED optics according to claim 1 is without thermalization camera lens, which is characterized in that the camera lens meets
Following parameter:
Number=1.0 effective focal length EFL=50mm, F of the camera lens, optical system overall length=60.881mm, adaptation detector point
Resolution 640x480,17 μm of Pixel size.
3. economical LONG WAVE INFRARED optics according to claim 1 is without thermalization camera lens, which is characterized in that the mirror of the camera lens
Aspherical in piece meets following expression formula:
Wherein z be it is aspherical along optical axis direction when being highly the position of r, away from aspheric vertex of surface apart from rise, c indicates surface
Vertex curvature, k is circular cone coefficient, α2、α3、α4、α5、α6For high order aspheric surface coefficient.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821510276.4U CN209182565U (en) | 2018-09-14 | 2018-09-14 | A kind of economical LONG WAVE INFRARED optics is without thermalization camera lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821510276.4U CN209182565U (en) | 2018-09-14 | 2018-09-14 | A kind of economical LONG WAVE INFRARED optics is without thermalization camera lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880363A (en) * | 2020-09-28 | 2020-11-03 | 歌尔股份有限公司 | Optical machine and AR equipment |
| CN113885183A (en) * | 2021-09-18 | 2022-01-04 | 安徽光智科技有限公司 | Long-wave athermal infrared lens with focal length of 100mm |
| CN114236762A (en) * | 2021-12-22 | 2022-03-25 | 中国电子科技集团公司第十一研究所 | Refrigeration type medium wave infrared athermalization lens and detection assembly |
-
2018
- 2018-09-14 CN CN201821510276.4U patent/CN209182565U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880363A (en) * | 2020-09-28 | 2020-11-03 | 歌尔股份有限公司 | Optical machine and AR equipment |
| CN111880363B (en) * | 2020-09-28 | 2024-04-05 | 歌尔股份有限公司 | Opto-mechanical and AR device |
| CN113885183A (en) * | 2021-09-18 | 2022-01-04 | 安徽光智科技有限公司 | Long-wave athermal infrared lens with focal length of 100mm |
| CN114236762A (en) * | 2021-12-22 | 2022-03-25 | 中国电子科技集团公司第十一研究所 | Refrigeration type medium wave infrared athermalization lens and detection assembly |
| CN114236762B (en) * | 2021-12-22 | 2024-03-19 | 中国电子科技集团公司第十一研究所 | Refrigeration type medium wave infrared athermalization lens and detection assembly |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Economical long-wave infrared optical athermalization lens Effective date of registration: 20200410 Granted publication date: 20190730 Pledgee: Bank of China Limited Yanjiao branch Pledgor: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2020990000304 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210323 Granted publication date: 20190730 Pledgee: Bank of China Limited Yanjiao branch Pledgor: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2020990000304 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An economical long wave infrared optical athermalized lens Effective date of registration: 20210323 Granted publication date: 20190730 Pledgee: Bank of China Limited Yanjiao branch Pledgor: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Registration number: Y2021990000246 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220617 Granted publication date: 20190730 Pledgee: Bank of China Limited Yanjiao branch Pledgor: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY CO.,LTD. Registration number: Y2021990000246 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An economical long wave infrared optical nonthermal lens Effective date of registration: 20220617 Granted publication date: 20190730 Pledgee: Bank of China Limited Yanjiao branch Pledgor: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY CO.,LTD. Registration number: Y2022990000337 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230323 Granted publication date: 20190730 Pledgee: Bank of China Limited Yanjiao branch Pledgor: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY CO.,LTD. Registration number: Y2022990000337 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CU01 | Correction of utility model |
Correction item: Pledgee Correct: Bank of China Limited Yanjiao Branch False: Bank of China Limited Yanjiao Branch Number: 15-02 Volume: 39 |
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| CU01 | Correction of utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An economical long wave infrared optical non thermal lens Effective date of registration: 20230329 Granted publication date: 20190730 Pledgee: Bank of China Limited Yanjiao Branch Pledgor: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY CO.,LTD. Registration number: Y2023990000179 |
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| CP03 | Change of name, title or address |
Address after: 065201 Factory Building L03-G, Baishi Jingu Yanjiao International Industrial Base, Yanjiao Development Zone, Sanhe City, Langfang City, Hebei Province Patentee after: Hebei Lansitek Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 065201 Factory Building L03-G, Baishi Jingu Yanjiao International Industrial Base, Yanjiao Development Zone, Sanhe City, Langfang City, Hebei Province Patentee before: SANHE LENSTEC PHOTOELECTRIC TECHNOLOGY CO.,LTD. Country or region before: China |
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